Tyresize

[Electronics4you]

Need Help

I'm going to buy some ATV tires for a robot, and I need some assistance about the size of them. The size of the tires is

25x8x12

What is what?

The link to the website is here:

**broken link removed**
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[JimB]

Are you sure you want to put these tyres on a "robot"???

A quick session on Google took me to



where I found the following information:


There are three types of tyre ‘descriptions’ on the side wall of tyres.
1 - Imperial e.g. 7.50x16 – meaning a tyre 7.5 inches wide and to be fitted on a 16 inch wheel
2 - American e.g. 31/10.5x15 - meaning 31 inches in diameter, 10.5 inches wide and to be fitted on a 15 inch wheel.
3 - Metric e.g. 205/75x16 – meaning 205mm wide with an aspect ratio (side wall height) of 75% of the width and to be fitted to a 16 inch wheel.


Those tyres are 25 inch diameter, 8 inch wide and fit on a 12 inch wheel, they are for a full sized off-road jeep.

JimB

 

[zevon8]

JimB has the correct answer. Those are some honkin' tires for a robot.


From the maxxis website: https://www.maxxis.com/products/atv/faq.asp

Most ATV tires are generally sized using the following format: AT25x10-12. The letter "R" may replace the dash to denote radial construction. The first number represents the Overall Diameter (O.D.); the second represents the section width (S.W.); and the third represents the wheel diameter. All measurements are in inches.
Note that these numbers are approximations and individual tire sizes may vary. For example, a 25x10R12 Maxxis Bighorn has the following specifications: O.D. = 25.4", S.W. = 10" (Of course, the rim diameter is 12".)

 

[Electronics4you]

Where can I find some ATV tires with a 7"-8"diameter for an ofroad robot?

 

[Dialtone]

Riding lawnmower tires are commonly found with 6 and 8 inch wheel sizes.
Suggest you look into those for the smaller diameters.
Dialtone